Results 11 to 20 of about 143 (124)
Frontiers in Earth Science, 2021 Geomagnetic jerks are sudden changes in the geomagnetic field secular variation related to changes in outer core flow patterns. Finding geophysical phenomena related to geomagnetic jerks provides a vital contribution to better understand the geomagnetic ...
S. A. Campuzano +6 more
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Geodesy and Geodynamics, 2022 The period and quality factor of the Chandler wobble (CW) are useful for constraining the Earth's internal structure properties, such as the mantle elasticity.
Yachong An, Hao Ding
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Contributions to Geophysics and Geodesy, 2022 Versus the theory of fully stochastically mechanism of geomagnetic jerks based on the buoyant force driven Quasi-Geostrophic (QG) dynamo, the torsional waves in realistic condition of the Earth's core evolve in the intradecadal time scales.
Mohsen LUTEPHY +2 more
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Rescue and quality control of historical geomagnetic measurement at Sheshan observatory, China [PDF]
Earth System Science Data, 2022 The Sheshan Geomagnetic Observatory (International Association of Geomagnetism and Aeronomy (IAGA) code SSH), China was built in Xujiahui, Shanghai in 1874 and moved to Sheshan, Shanghai at the end of 1932.
S. Zhang +7 more
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IRREGULARITIES IN THE DISPLACEMENT OF THE EARTH’S GEOGRAPHIC POLE AND JERKS IN THE GEOMAGNETIC FIELD
Геодинамика и тектонофизика, 2023 There are presented the results of analysis of some irregularities in the series of displacement coordinates on the Earth’s surface for the geographic North Pole in order to relate them temporally to some global jerks in the geomagnetic field.
G. S. Kurbasova, A. E. Volvach
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On the characteristics of successive geomagnetic jerks [PDF]
Earth, Planets and Space, 2014 Spherical harmonic models of the 1969, 1979 and 1992 geomagnetic jerks are computed using data from about 160 worldwide geomagnetic observatories. The dominance of the internal origin part with respect to the external one confirms again the internal origin of these events. A change of sign is observed between two successive jerks (1969–1979, 1979–1992).
Le Huy, Minh +3 more
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Geomagnetic field declination: from decadal to centennial scales [PDF]
Solid Earth, 2018 Declination annual mean time series longer than 1 century provided by 24 geomagnetic observatories worldwide, together with 5 Western European reconstructed declination series over the last 4 centuries, have been analyzed in terms of the frequency ...
V. Dobrica, C. Demetrescu, M. Mandea
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Measuring chandler wobble amplitude variations using IERS EOP C04 data [PDF]
Serbian Astronomical Journal, 2023 We analyzed the Earth's long-term polar motion using the time series IERS EOP C04 (International Earth Rotation and Reference Systems Service - IERS; Earth Orientation Parameters - EOP; Combination of four (04) techniques - C04), from 1984 to ...
Damljanović G., Vasilić V.
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Regional character of geomagnetic field directional circularity: Holocene Eastern North America
Frontiers in Earth Science, 2023 This study characterizes the paleomagnetic secular variation (PSV) in five Holocene records from Eastern North America. We have determined equi-spaced (100-year) declination and inclination time series for the five sites and compared their directional ...
Steven P. Lund
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Signs of a new geomagnetic jerk between 2019 and 2020 from Swarm and observatory data
Earth, Planets and Space, 2021 Highlights Observatory and Swarm data reveal a new geomagnetic jerk around 2019–2020. A very recent geomagnetic field model indicates the global character of the new jerk. A new pulse at the CMB around mid-2018 seems to be the starting point of this jerk.
F. Javier Pavón-Carrasco +3 more
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